CN105126191A - Automatic exhausting, liquid-stopping and blood return-preventing drip chamber - Google Patents

Automatic exhausting, liquid-stopping and blood return-preventing drip chamber Download PDF

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Publication number
CN105126191A
CN105126191A CN201510510132.3A CN201510510132A CN105126191A CN 105126191 A CN105126191 A CN 105126191A CN 201510510132 A CN201510510132 A CN 201510510132A CN 105126191 A CN105126191 A CN 105126191A
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CN
China
Prior art keywords
floating cup
liquid
floating
cup
dropping funnel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510510132.3A
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Chinese (zh)
Inventor
雷冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Puruisi Biological Science & Technology Co Ltd
Original Assignee
Sichuan Puruisi Biological Science & Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Puruisi Biological Science & Technology Co Ltd filed Critical Sichuan Puruisi Biological Science & Technology Co Ltd
Priority to CN201510510132.3A priority Critical patent/CN105126191A/en
Publication of CN105126191A publication Critical patent/CN105126191A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an automatic exhausting, liquid-stopping and blood return-preventing drip chamber, which comprises a main body, wherein a liquid inlet is formed in the upper part of the main body and a liquid outlet is formed in the lower part of the main body; a floating cup is arranged inside the main body; a soft rubber base is arranged on the lower part of the floating cup; the drip chamber is characterized in that baffle blocks are fixedly arranged on the circumference of the inner wall of the main body; a baffle ring is fixedly arranged on the outer circumference of the lower part of the floating cup; the baffle ring can be stopped by the baffle blocks; and when the floating cup is located on the lowest position, the highest point of the floating cup is higher than the baffle blocks. The drip chamber disclosed by the invention has the beneficial effects that the floating cup can float and rise in liquid when density of the floating cup is relatively low, and the floating cup can be stopped by the baffle blocks from continuing to float up to block the liquid inlet when rising to a certain height; at the same time, a drainage passage is formed by gaps between the baffle blocks, so as to avoid influence on the normal flow of the liquid; and in addition, the floating cup is consistent in axial line since the circumference of the floating cup is restrained by the baffle blocks, so that the soft rubber base can be accurately positioned on the liquid outlet when dropping down, therefore, a liquid-stopping effect is guaranteed when the drip chamber is under an inclined state.

Description

Automatic vent stops liquid blood return prevention dropping funnel
Technical field
The present invention relates to the dropping funnel that a kind of transfusion device uses, belong to medical apparatus field.
Background technology
Transfusion device is widely used medical apparatus and instruments, its objective is and liquid is inputted human body, and its operation principle is: liquid enters human body through perforator, upper tubing (containing liquid bag), dropping funnel, lower tube for transfusion (containing switch), syringe needle.Wherein the effect of dropping funnel stores medicinal liquid, is convenient to observe medicinal liquid flow velocity and medicine liquid level.
Above-mentioned structure, when Clinical practice, also exists following problem:
After upper liquid is totally lost, before the liquid that must store in dropping funnel has in time dripped, allow new liq enter into dropping funnel, otherwise the air bubble in dropping funnel can enter human body, thus formation aeroembolism, physical and mental health and even the life security of patient can be threatened time serious.Meanwhile, under the blood pressure pressure of human body, the blood in human body also can be back in lower tube for transfusion.
In order to solve aeroembolism and blood back phenomenon, the transfusion device of only liquid blood return prevention is have developed before my company, primary structure is in dropping funnel, arrange floating cup; floating cup is suspended in the liquid storage in dropping funnel at ordinary times; do not affect the proper flow of liquid, and when the stock solution level in dropping funnel declines, floating cup declines thereupon; until close the liquid outlet of dropping funnel, thus realize the function of only liquid and blood return prevention.
But in normal operation, Infusion set is in plumbness to above-mentioned structure, floating cup and flexible glue base form fluid stopping assembly, are subject to gravity, buoyancy combined effect.When in dropping funnel, liquid is more, the buoyancy produced is greater than fluid stopping assembly self gravitation, causes fluid stopping assembly to float up to new equilbrium position, and flexible glue base is separated with lower tube for transfusion, and liquid enters lower tube for transfusion, normal infusion; When liquid in dropping funnel reduces, fluid stopping assembly sinks thereupon, and when buoyancy that liquid produces is not enough to floating cup gravitational equilibrium, flexible glue base and lower tube for transfusion are fitted, and realize fluid stopping.
Above structure, there will be following defect: 1. the top of floating cup can block the feed pathway on dropping funnel top, makes liquid not drop in dropping funnel normally, more easily occurs aeroembolism and blood back phenomenon; 2. in fact, during transfusion, in a lot of situation, dropping funnel is all in heeling condition, and gravity direction and the drip chamber axis direction of floating cup are inconsistent, is easy to cause sealing smoothly only liquid.
Summary of the invention
The object of this invention is to provide a kind of automatic vent and stop liquid blood return prevention dropping funnel to make up the deficiency of prior art.
The present invention is the technical scheme adopted that achieves the goal: automatic vent stops liquid blood return prevention dropping funnel, comprises body, and body upper part has inlet, liquid outlet is arranged at bottom, has floating cup in body, and flexible glue base is arranged at floating cup bottom, it is characterized in that:
Inner body wall is circumferentially fixed with block; Floating cup lower outer circumferential is fixed with back-up ring; Block can block back-up ring;
When floating cup is positioned at extreme lower position, the peak of floating cup is higher than block.
The scheme optimized: the top of floating cup is hemispherical.
The scheme optimized: floating cup comprises floating cup and cup of floating downward, adopts grafting or bonding mode to connect between the two; Recess is arranged at floating cup bottom.
The scheme optimized: the quantity of block is 3-6, is uniformly distributed at circumferencial direction.
beneficial effect of the present invention is: when the density of floating cup is less, floating rising in a liquid, rises to a certain degree, will be blocked by block, can not continue floating and block inlet; And now, the space between block forms lower liquid passage, so the proper flow of liquid can not be hindered; In addition, the circumference of block to floating cup forms a kind of constraint, and keep the concordance of axis, when falling like this, flexible glue base can be accurately positioned on liquid outlet, ensure that only liquid effect during dropping funnel heeling condition.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the profile of Fig. 1.
Fig. 3 be dropping funnel inclination conditions float downward cup floating time structural representation.
Fig. 4 is the fit structure schematic diagram of block and back-up ring.
Detailed description of the invention
In the drawings, 1 is body, and 2 is inlets, and 3 is liquid outlets, and 4 is floating cups, and 5 is flexible glue bases, and 6 is blocks, and 7 is back-up rings, and 9 is recesses.
Embodiment 1:
When normally using, liquid enters in dropping funnel from the inlet 2 on body 1 top, stores in dropping funnel, has certain liquid level, and liquid flows out dropping funnel from liquid outlet 3 again and enter human body after lower tube for transfusion.
In above process, floating cup 4 proportion is less than liquid, in liquid on float, if do not retrained it, floating cup 4 just likely floats to top, closes inlet 3, makes dropping funnel can not normal feed liquor.In order to avoid the generation of this situation, we are circumferentially fixed with block 6 at body 1 inwall, and floating cup 4 lower outer circumferential is fixed with back-up ring 7.Floating cup 4 floats to a certain extent, and block 6 will block back-up ring 7, makes floating cup 4 can not continue to rise.
In infusion process, floating cup 4 will remain this state, and block 6 space each other just becomes lower liquid passage, ensure that normally carrying out of lower liquid process.Meanwhile, the effect of contraction of block 6 to floating cup 4 entirety can make floating cup 4 keep in uphill process and the coaxial state of dropping funnel.
After upper liquid is totally lost, again could not in time liquid feeding when, liquid level in dropping funnel declines gradually; floating cup 4 is also along with whereabouts (remain the coaxial state with dropping funnel under the constraint of block 6); until liquid outlet 3 is closed by the flexible glue base 5 of its lower end; make air not enter human body by liquid outlet 3, reaches the object of only liquid and blood return prevention.
Now, the peak of floating cup 4 is higher than block 6, and the object of design is like this: when upper liquid enters dropping funnel again, and floating cup 4 can float smoothly, and can not be blocked by block 6.
Embodiment 2:
In the present embodiment, the top of floating cup 4 is hemispherical, makes inlet 2 dripping can not produce the phenomenon of splashing.
Embodiment 3:
In order to increase the buoyancy of floating cup 4, floating cup being divided into floating cup and cup of floating downward, adopting grafting or bonding mode to connect between the two; Recess 9 is arranged at floating cup bottom, to increase the lifting surface area of the buoyancy of floating cup 4.
In all of the embodiments shown above, all adopt central axis locate mode, more elongated floating cup coordinates with block, ensures central axis and the dropping funnel central axes of floating cup as far as possible.When gap is identical, floating cup is more elongated, and axis axis oscillating angle is less, and it is more accurate to locate.Block and floating cup contact area reduce, and can reduce frictional resistance, are convenient to freely floating or declining of relief valve, especially when dropping funnel tilts to use.
This elongated locate mode of central axis accurately, ensure that dropping funnel is not more than within the scope of 30 degree at inclination angle, and floating cup can both accurate tight closed liquid outlet.And product most cases when reality uses is tilted-putted.

Claims (4)

1. automatic vent stops liquid blood return prevention dropping funnel, comprises body, and body upper part has inlet, liquid outlet is arranged at bottom, has floating cup in body, and flexible glue base is arranged at floating cup bottom, it is characterized in that:
Inner body wall is circumferentially fixed with block; Floating cup lower outer circumferential is fixed with back-up ring; Block can block back-up ring;
When floating cup is positioned at extreme lower position, the peak of floating cup is higher than block.
2. automatic vent according to claim 1 stops liquid blood return prevention dropping funnel, it is characterized in that: the top of floating cup is hemispherical.
3. automatic vent according to claim 1 and 2 stops liquid blood return prevention dropping funnel, it is characterized in that: floating cup comprises floating cup and cup of floating downward, and adopts grafting or bonding mode to connect between the two; Recess is arranged at floating cup bottom.
4. automatic vent according to claim 1 and 2 stops liquid blood return prevention dropping funnel, it is characterized in that: the quantity of block is 3-6, is uniformly distributed at circumferencial direction.
CN201510510132.3A 2015-08-19 2015-08-19 Automatic exhausting, liquid-stopping and blood return-preventing drip chamber Pending CN105126191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510510132.3A CN105126191A (en) 2015-08-19 2015-08-19 Automatic exhausting, liquid-stopping and blood return-preventing drip chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510510132.3A CN105126191A (en) 2015-08-19 2015-08-19 Automatic exhausting, liquid-stopping and blood return-preventing drip chamber

Publications (1)

Publication Number Publication Date
CN105126191A true CN105126191A (en) 2015-12-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106390227A (en) * 2016-10-31 2017-02-15 四川普瑞斯生物科技有限公司 Safe drip chamber used for infusion apparatus
CN109157702A (en) * 2018-09-27 2019-01-08 浙江新德意医疗科技股份有限公司 Dropping funnel is used in a kind of infusion

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989043A (en) * 1974-12-23 1976-11-02 John Dimeff Automatic flow control and automatic shut off for intravenous feeders
US4055176A (en) * 1976-05-24 1977-10-25 Valleylab Universal drip chamber and spike assembly
DE3019771A1 (en) * 1980-05-23 1981-12-03 Peter 5012 Bedburg Küpper Infusion instrument with drip chamber - has rubber outlet accommodating conical valve plug secured to float
CN201658718U (en) * 2009-07-27 2010-12-01 汪贤宗 Intravenous drip transfusion fixer and safe transfusion water stop device
CN201832284U (en) * 2010-03-31 2011-05-18 郑万章 Safety valve and infusion and blood transfusion device provided with same
CN102068738A (en) * 2010-07-07 2011-05-25 廖首猜 Fixing safety device for transfusion and blood transfusion
CN102085401A (en) * 2010-08-20 2011-06-08 汪贤宗 Anti-extrusion drip transfusion safety control device
CN102580189A (en) * 2012-02-14 2012-07-18 河南曙光健士医疗器械集团有限公司 Disposable self-stopping infusion apparatus
CN102813984A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus
CN102813983A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device
CN202682478U (en) * 2012-08-06 2013-01-23 戴建达 Safe automatic hydraulic-control starting-stopping valve and infusion apparatus having the same
CN204275150U (en) * 2014-11-24 2015-04-22 湖北楚天药业有限责任公司 Kettle is dripped in a kind of transfusion
CN104689409A (en) * 2015-03-04 2015-06-10 江西丽华鑫朗药业科技有限公司 Multifunctional transfusion device capable of preventing bubbles and automatically stopping liquid
CN204815196U (en) * 2015-08-12 2015-12-02 江西丽华鑫朗药业科技有限公司 Mobile membrane dual positioning of H type ends liquid transfusion system
CN204864329U (en) * 2015-08-19 2015-12-16 四川普瑞斯生物科技有限公司 Automatic exhaust ends liquid and prevents back drop of blood fill

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989043A (en) * 1974-12-23 1976-11-02 John Dimeff Automatic flow control and automatic shut off for intravenous feeders
US4055176A (en) * 1976-05-24 1977-10-25 Valleylab Universal drip chamber and spike assembly
DE3019771A1 (en) * 1980-05-23 1981-12-03 Peter 5012 Bedburg Küpper Infusion instrument with drip chamber - has rubber outlet accommodating conical valve plug secured to float
CN201658718U (en) * 2009-07-27 2010-12-01 汪贤宗 Intravenous drip transfusion fixer and safe transfusion water stop device
CN201832284U (en) * 2010-03-31 2011-05-18 郑万章 Safety valve and infusion and blood transfusion device provided with same
CN102068738A (en) * 2010-07-07 2011-05-25 廖首猜 Fixing safety device for transfusion and blood transfusion
CN102085401A (en) * 2010-08-20 2011-06-08 汪贤宗 Anti-extrusion drip transfusion safety control device
CN102580189A (en) * 2012-02-14 2012-07-18 河南曙光健士医疗器械集团有限公司 Disposable self-stopping infusion apparatus
CN202682478U (en) * 2012-08-06 2013-01-23 戴建达 Safe automatic hydraulic-control starting-stopping valve and infusion apparatus having the same
CN102813984A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhaust two-way self-closed liquid-stop blood return-prevention infusion apparatus
CN102813983A (en) * 2012-08-09 2012-12-12 四川普瑞斯生物科技有限公司 Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device
CN204275150U (en) * 2014-11-24 2015-04-22 湖北楚天药业有限责任公司 Kettle is dripped in a kind of transfusion
CN104689409A (en) * 2015-03-04 2015-06-10 江西丽华鑫朗药业科技有限公司 Multifunctional transfusion device capable of preventing bubbles and automatically stopping liquid
CN204815196U (en) * 2015-08-12 2015-12-02 江西丽华鑫朗药业科技有限公司 Mobile membrane dual positioning of H type ends liquid transfusion system
CN204864329U (en) * 2015-08-19 2015-12-16 四川普瑞斯生物科技有限公司 Automatic exhaust ends liquid and prevents back drop of blood fill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106390227A (en) * 2016-10-31 2017-02-15 四川普瑞斯生物科技有限公司 Safe drip chamber used for infusion apparatus
CN109157702A (en) * 2018-09-27 2019-01-08 浙江新德意医疗科技股份有限公司 Dropping funnel is used in a kind of infusion

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Application publication date: 20151209